LOC Cooling System For industrial use

LOC 

Cooling system 

The Professional Choice 

OLAER LOC | optimized for industrial use

Olaer is a global player specialising in innovative, effi cient system solutions for temperature optimisation and energy storage. 

All over the world, our products are working in the most diverse environments and applications. 

LOC Cooling System 

The LOC cooling system with three-phase AC motor is 

optimized for use in the industrial sector. The system is 

supplied ready for installation. An integrated 

circulation pump makes it possible to cool and treat 

the oil in a separate circuit – offl ine cooling. The 

cooling system is also available with the FX3 fi lter unit. 

Together with a wide range of accessories, the LOC 

cooling system is suitable for installation in most 

applications and environments. The maximum cooling 

capacity is 45 kW at ETD 40 °C. Choosing the right 

cooler requires precise system sizing. The most reliable 

way to size is with the aid of our calculation program. This 

program, together with precise evaluations from our 

experienced, skilled engineers, gives you the 

opportunity for more cooling per € invested. 

Overheating - an expensive problem 

An under-sized cooling capacity produces a temperature 

balance that is too high. The consequences are poor 

lubricating properties, internal leakage, a higher risk 

of cavitation, damaged components, etc. Overheating 

leads to a signifi cant drop in cost-effi ciency and 

environmental consideration. 

OLAER | LOC 

For industrial use – maximum cooling capacity 45 kW 

Cooling capacity 

Lifetime 

Temperature optimisation - a basic prerequisite 

for cost-effi cient operation 

Temperature balance in a hydraulic system occurs when 

the cooler can cool down the energy input that the 

system does not consume - the system’s lost energy 

(Ploss = Pcool = Pin – Pused). 

Temperature optimisation means that temperature 

balance occurs at the system’s ideal working 

temperature – the temperature at which the oil’s 

viscosity and the air content comply with recommended 

values. The correct working temperature produces a 

number of economic and environmental benefi ts: 

Extended hydraulic system life. 

Extended oil life. 

Increased hydraulic system availability - more 

operating time and fewer shutdowns. 

Reduced service and repair costs. 

Maintained high effi ciency in continuous 

operation – the system effi ciency falls if the 

temperature exceeds the ideal working 

temperature. 

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Clever design and the right choice of 

materials and components produce a long 

useful life, high availability and low service 

and maintenance costs. 

Cooler matrix 

with low pressure drop and 

high cooling capacity. 

Integrated 

ciculation pump 

produces and even fl ow with 

low pressure pulsations. 

Quiet 

fan and fan motor. 

Easy to maintain 

and easy to retrofi t in 

many applications. 

Compact design 

and low weight. 

The Professional Choice 3

Proprietary outer helical wrap 

Tightly bonds to each pleat for stability 

and strength. 

Benefi ts: Reliable, consistent performance 

and resistance to severe operating 

conditions. 

Good things come in small packages… 

Characteristics 

Media substrate support layer 

(not shown) Provides support for the 

media and aids in drainage fl ow. 

Benefi ts: Reliable, consistent performance. 

Coreless/cageless design 

Outer element cage is a permanent part of the 

fi lter housing. 

Benefi ts: Lighter, environmentally friendly 

element for reduced disposal costs and ease of 

element change-out. 

Stress-resistant design 

Uniform pore size control layer 

Tapered pore structure 

Epoxy resin bonded fi bre matrix with small fi bre size 

Anti-static design 

cSt cSt 

450 

300 

150 

0 

Filter material LP 

For systems with working pressure 

below 200 bar. 

30 50 70 

300 

200 

100 

Up and downstream mesh layers 

Proprietary cushion layer 

Provides support for the media and 

protection from handling. 


Create fl ow channels for uniform fl ow 

through the fi lter. 

Benefi ts: Extended element life for lower 

operating costs. 

4” LP 4” HP 

Flow 

l/min. 

0 

Benefi ts 

Filter material HP 

For systems with working pressure 

above 200 bar. 

30 50 70 

Material 

Inert, inorganic fi bres securely bonded in a 

fi xed, tapered pore structure with increase 

resistance to system stresses such as cyclic 

fl ow and dirt loading. 

Benefi ts: Improved performance over the fi lter 

life and more consistent fl uid cleanliness. 


Ease of element change-out 

Enhanced performance under cyclic fl ow and pressure conditions 

Maintained effi ciency during the entire life 

Dirt captured throughout the media depth 

High particles removal effi ciency 

Minimized static charge generation and electrostatic discharge 

Choose the right fi lter element: 

Corrosion-resistant end caps feature exclusive 

Auto-Pull tabs for automatic element 

extraction upon opening the housing. 

Benefi ts: Ease of element change-out. 

O-ring seal 

Prevents contaminant bypassing the fi ltration 

medium under normal operation. 


1. Filter material HP or LP – depends on pressure level, 

i.e. the system’s average pressure. 

2. The fi lter’s fl ow capacity – the oil fl ow is 

determined by the LOC cooler model, i.e. 

3. 

current cooling requirement. 

The length of the fi lter element – depends on the 

operating viscosity. The pressure drop over the fi lter 

element is proportional to the viscosity, e.g. oil that 

is three times as thick produces a pressure drop that 

is three times as high. 

4 www.olaer.com 

Flow 

l/min.


The FX3 original fi lter gives you constantly cleaner oil, more lasting system protection and greater stability during operation at varying fl ow and pressure. 

The FX3 captures dirt along the whole length of the fi lter material and retains effi ciency throughout its useful life. 

The element is easy to replace, it comes out when you unscrew the cover - it couldn’t be simpler. 

Why not clean the oil while cooling it? Equipped with 

our fi lter unit FX3 the oil will be cleaned in a separate 

circuit, an ideal complement to the system fi lter. Our 

fi lter unit FX3 is available as option. 

Filter technique 

FX3 Original Filter 

Designing fi lter media has traditionally been a 

question of balance. By making the medium fi ner, more 

effi cient and cleaner, pressure drop and/or 

servicable life is sacrifi ced. To get low clean pressure 

FX3 

FILTER UNI T 

Compact 

Environment friendly 

Highly effi cient 

element makes difference 

drop the removal effi ciency is sacrifi ced. With FX3 

fi lter media OLAER has improved the fi lter’s ability 

to maintain fl uid cleanliness, while at the same time 

increasing fl ow capacity (reducing pressure drop). 

The result is a better and more consistent system 

protection, i.e. high fl ow capacity in a small envelope 

size, optimum performance at stages of fi lter life, i.e. 

optimum performance under cyclic fl ow and pressure 

conditions for consistently cleaner fl uid. 


Calculate the cooling capacity requirement 

Cooling 

capacity 

requirement? 

Installed 

capacity 

Theoretical 

capacity losses 

Flow? 

Pressure? 

Pump capacity? 

Enter your values .... 

Measure in 

your existing 

unit 

Choose the right kind of cooler 

... suggested solution 

Contact 

our 

engineers 


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Better energy consumption means not only less environmental impact, but also reduces operating costs, i.e. more cooling per € invested. 

More cooling per € 

with precise calculations and our engineers’ support 

Optimal sizing produces effi cient cooling. Correct sizing ng 

requires knowledge and experience. Our calculation on 

program, combined with our engineers’ support, gives es 

you access to this very knowledge and experience. The he 

result is more cooling per € invested. 

The user-friendly calculation program can be 

downloaded from – www.olaer.se 

Valuable system review into the bargain 

A more wide-ranging review of the hydraulic system is 

often a natural element of cooling calculations. Other er 

potential system improvements can then be discussed ed 

– e.g. fi ltering, offl ine or online cooling, etc. Contact us 

for further guidance and information. 

OLAER’s quality and performance guarantee ee 

insurance for your operations and systems 

A constant striving towards 

more cost-effi cient and environ- 

men ment friendly hydraulic systems 

requ requires continuous development. 

me Areas where we are 

continuously co 

seeking to 

improve im performance include 

cooling c capacity, noise level, 

pressure drop and fatigue. 

Meticulous quality and performance tests are conducted 

in our laboratory. All tests and measurements take 

place in accordance with standardised methods - 

cooling capacity in accordance with EN1048, noise 

level ISO 3743, pressure drop EN 1048 and fatigue ISO 

10771-1. 

For more information about our standardised tests, ask 

for “OLAER’s blue book – a manual for more reliable 

cooler purchasing”. 


Technical specifi cation 

LOC is designed primarily for synthetic oils, vegetable 

oils and mineral oil type HL/HLP in accordance with 

DIN 51524. Maximum oil temperature 100 °C. 

Maximum negative pressure in the inlet line is 0.4 bar 

with an oil-fi lled pump. Maximum pressure on the 

pump’s suction side is 0.5 bar. 

Maximum working pressure for the pump is 10 bar. 

For information about suction height, pressure, etc. 

see the QPM3 pump manual. 

Heat transfer tolerance ± 6 % 

3-PHASE MOTOR 

3-phase asynchronous motors in accordance with IEC 60034-1 

Nominal voltage * 

Insulation class F 

Rise of temperature B 

Protection class IP 55 

Recommended ambient temperature -20 °C - +40 °C 

* = See separate instructions for electric motor. 

TYPE Nom. oil fl ow 

l/min 


in kW at EDT 40 °C 


kW/°C 

Acoustic pressure level 

LpA dB(A) 1m* 

No. of poles/ Capacity 

kW 


MATERIAL 

Pump housing/Cooler matrix Aluminum 

Fan blades/hub Glass fi bre reinforced polypropylene/ 

Aluminum 

Fan housing Steel 

Fan guard Steel 

Other parts Steel 

Surface treatment Electrostatically powder-coated 

FX3 FILTER UNIT (option) Aluminum 

The fi lter housing has a built-in bypass valve, pre-set 

pressure 4.5 ± 0.3 bar. 

CONTACT OLAER FOR ADVICE ON 

Oil temperatures > 100 °C 

Oil viscosity > 100 cSt 

Aggressive environments 

Ambient air rich in particles 

High-altitude locations 

Weight 

kg (approx) 

LOC 004 - 4 - D - A 20 2.7 0.07 57 4-0.75 23 

LOC2 007 - 4 - D - A 20 5.6 0.14 64 4-0.75 30 

LOC2 007 - 4 - D - B 40 7.2 0.18 64 4-.075 30 

LOC2 007 - 4 - D - C 60 8.0 0.20 65 4-1.50 36 

LOC2 007 - 4 - D - D 80 8.4 0.21 65 4-1.50 36 


LOC2 011 - 4 - D - B 40 10.4 0.26 70 4-0.75 34 
















LOC 033 - 6 - A - D 55 26.0 0.65 74 6-2.20 92 

LOC 033 - 4 - A - C 60 32.0 0.80 85 4-3.00 76 



LOC 044 - 4 - A - C 60 40.0 1.00 86 4-3.00 85 


* = Electric motors specifi ed are calculated for max. working pressure 6 bar at 125 cSt and 50 Hz, 4 bar at 125 cSt and 60 Hz. 

If you require higher pressure, please contact us for a choice of motors with a higher output. 

** = Noise level tolerance ± 3 dB(A). 

8 www.olaer.com


TYPE 

A B C D E F G H I J K L Mø 

LOC 004 - 4 - D - A 267 134 135 284 73 G1 420 90 164 163 488 58 9 

LOC2 007 - 4 - D - A 365 203 105 395 42 G1 510 160 215 225 558 50 9 

LOC2 007 - 4 - D - B 365 203 105 395 42 G1 510 160 215 225 571 50 9 

LOC2 007 - 4 - D - C 365 203 105 395 42 G1 510 160 215 225 620 50 9 

LOC2 007 - 4 - D - D 365 203 105 395 42 G1 510 160 215 225 633 50 9 


















LOC 033 - 6 - A - D 692 356 99 722 32 G1¼ 610 406 378 318 754 70 14 

LOC 033 - 4 - A - C 692 356 99 722 32 G1¼ 610 406 378 318 727 70 14 



LOC 044 - 4 - A - C 692 356 99 866 49 G1¼ 610 584 450 343 750 70 14 



Key for LOC and LOC2 

cooling systems 

All positions must be fi lled in when ordering 

EXAMPLE: 

LOC2 - 011 - 6 - A - C - L - 50 - S20 - D - E0 - 0 

1 2 3 4 5 6 7 8 9 10/11 12 

1. TYPE OF COOLING SYSTEM = L0C / LOC2 

2. COOLER SIZE 

004, 007, 011, 016, 023, 033, 044 

3. NUMBER OF POLES, MOTOR 

4 - pole = 4 

6 - pole = 6 

4. VOLTAGE AND FREQUENCY 

Three-phase 220-240/380-420 V 50 Hz* = A 

Three-phase 440-480 V 60 Hz* = B 

Three-phase 220-240/380-420 V 50 Hz 440/480 V 60 Hz** = D 

Three-phase 500 V 50 Hz = E 

Three-phase 400/690 V 50 Hz 440-480 V 60 Hz = F 

Three-phase 525 V 50 Hz = G 

Motor for special voltage (stated in plain language) = X 

* = for LOC 033 to LOC 044 

** = for LOC 004 to LOC2 023 

5. PUMP SIZE 

Displacement 15 cm 3 /r = A 

Displacement 30 cm 3 /r = B 

Displacement 45 cm 3 /r = C 

Displacement 60 cm 3 /r = D 

Special = X 

6. BYPASS VALVE, PUMP 

No bypass valve = O 

Built-in bypass valve, 5 bar internal = L 

Built-in bypass valve, 10 bar internal = H 

Built-in bypass valve, 5 bar external = K 

Built-in bypass valve, 10 bar external = M 

7. THERMO CONTACT 

For temperature alarm, not for direct control of electric motor. 

No thermo contact = 00 

40 °C = 40 

50 °C = 50 

60 °C = 60 

70 °C = 70 

80 °C = 80 

90 °C = 90 

8. COOLER MATRIX 

Standard = 000 

Two-pass = T00 

Built-in, pressure-controlled bypass, single-pass 

2 bar = S20 

5 bar = S50 

8 bar = S80 

Built-in, pressure-controlled bypass, two-pass* 

2 bar = T20 

5 bar = T50 

8 bar = T80 


Built-in temperature and pressure-controlled bypass, single-pass 

50 °C, 2.2 bar = S25 

60 °C, 2.2 bar = S26 

70 °C, 2.2 bar = S27 

90 °C, 2.2 bar = S29 

Built-in temperature and pressure-controlled bypass, two-pass* 

50 °C, 2.2 bar = T25 

60 °C, 2.2 bar = T26 

70 °C, 2.2 bar = T27 

90 °C, 2.2 bar 

* = not valid for LOC 004 

= T29 

9. MATRIX GUARD 

No guard = 0 

Stone guard = S 

Dust guard = D 

Dust and stone guard = P 

10. FX3 FILTER UNIT (sizing, see page 4) 

No fi lter unit = 0 

Filter unit with 4” element HP = A 

Filter unit with 4” element LP = B 

Filter unit with 8” element HP = E 

Filter unit with 8” element LP = F 

11. PRESSURE DROP INDICATOR 

No pressure drop indicator. = O 

Visual pressure drop indicator with manual reset. = D 

Visual pressure drop indicator with thermo 

guard and manual reset. No signal below 0 °C, 

signal above +29 °C. = P 

Electric pressure drop indicator with automatic reset. 

Connection in accordance with DIN 43650 

ISO 4400 (Hirschmann) IP 65. = M 

Electric pressure drop indicator 

with 2-pole AMP contact. = U 

12. STANDARD/SPECIAL 

Standard = O 

Special = Z 

SPARE PARTS 

Part number Description 

58920102 Filter element 04” HP 

58920103 Filter element 04” LP 

58920302 Filter element 08” HP 

58920303 Filter element 08” LP 

589310 O-ring for fi lter housing cover 

The information in this brochure is subject to change without prior notice. 

10 www.olaer.com


With our specialist expertise, industry knowledge and advanced technology, 

we can offer a range of different solutions for coolers and accessories to meet your requirements. 

Take the next step 

- choose the right accessories 

Supplementing a hydraulic system with a cooler, cooler accessories and an accumulator gives you increased availability 

and a longer useful life, as well as lower service and repair costs. All applications and operating environments are unique. 

A well-planned choice of the following accessories can thus further improve your hydraulic system. Please contact 

Olaer for guidance and information. 

Pressure-controlled 

bypass valve Integrated 

Allows the oil to bypass the cooler matrix if the 

pressure drop is too high. Reduces the risk of 

the cooler bursting, e.g. in connection with 

cold starts and temporary peaks in pressure 

or fl ow. Available for single-pass or two-pass 

matrix design. 

Temperature-controlled 

bypass valve Integrated 

Same function as the pressure-controlled 

by–pass valve, but with a temperature-controlled 

opening pressure - the hotter the oil, the 

higher the opening pressure. Available for 

single-pass or two-pass matrix design. 

Thermo contact 

Sensor with fi xed set point. For temperature 

warnings, and for more cost-effi cient operation 

and better environmental consideration through 

the automatic switching on and off of the 

fan motor. 

Stone guard/Dust guard 

Protects components and systems from 

tough conditions. 

Lifting eyes 

For simple installation and relocation. 

Temperature-controlled 

3-way valve External 

Same function as the temperature-controlled 

bypass valve, but positioned externally. 

Note: must be ordered separately. 


Global perspective 

Olaer is a global player specialising in innovative, 

efficient system solutions for temperature optimisation 

and energy storage. Olaer develops, manufactures and 

markets products and systems for a number of different 

sectors, e.g. the aircraft, engineering, steel and 

mining industries, as well as for sectors such as oil and 

gas, contracting and transport, farming and forestry, 

renewable energy, etc. 

All over the world, our products operate in the most 

diverse environments and applications. One constantly 

and local entrepreneurial flair 

www.olaer.com 

The Professional Choice 

- in Fluid Energy Management 

repeated demand in the market is for optimal energy 

storage and temperature optimisation. We work at a 

local level with a whole world as our workplace – local 

entrepreneurial flair and a global perspective go hand 

in hand. 

Our local presence, long experience and a wealth of 

knowledge combine with our cutting-edge expertise 

to give you the best possible conditions for making a 

professional choice. 

Copyright © 2010 OLAER

LOC Cooling System For industrial use

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